Residential Rebates Back to Ways to Save Residential Rebates & Incentives Insulation Upgrade Upgrade your insulation and get up to $300 back from CU. Insulation Rebate ENERGY STAR® Smart Thermostat Receive a $75 rebate when you purchase and install an ENERGY STAR® labeled Smart Thermostat. Thermostat Rebate Ways to Save Residential Rebates Commercial Rebates Efficiency Programs Renewable Energy Heating & Cooling Save between $400-$1025 with heating & cooling rebates for ENERGY STAR® efficiency rated systems. Heating & Cooling WaterSense® High Efficiency Toilet Save up to $75 when you purchase & install a WaterSense® High Efficiency Toilet. Toilet Rebate Heating System Tune-up ***Limited Time*** Tune-up your heating system and get $50 back from CU. Tune-up Rebate Electric Vehicle (EV) Charging Rebates Receive rebates when you install EV chargers in your home, upgrade your home by adding a 240-volt outlet, or install a 240-volt EV-Ready outlet in a new construction home. EV Rebates